#3758DE#3758DE

#3758DE is a mid, highly saturated blue. Relative luminance 0.131; OKLCH L 52.1% C 0.207 H 267.7°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#3758DE
RGB	rgb(55, 88, 222)
HSL	hsl(228, 72%, 54%)
HSV	hsv(228, 75%, 87%)
CMYK	cmyk(75.2%, 60.4%, 0%, 12.9%)
CIE-LAB	lab(42.86, 34.73, -71.67)
CIE-LCH	lch(42.86, 79.64, 295.85°)
OKLab	oklab(52.07% -0.0082 -0.2071)
OKLCH	oklch(52.07% 0.207 267.7)
XYZ	xyz(18.2455, 13.0636, 70.6530)
Luminance	0.1307 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758DE #DEBD37

analogous

#37ABDE #3758DE #6A37DE

triadic

#3758DE #DE3758 #58DE37

tetradic

#3758DE #DE37AB #DEBD37 #37DE6A

square

#3758DE #DE37AB #DEBD37 #37DE6A

split-complementary

#3758DE #DE6A37 #ABDE37

monochromatic

#162C85 #1F3DB9 #3758DE #6C84E7 #A0B0EF

Accessibility & contrast

On white

5.81

#3758DE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#3758DE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758DE

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758DE	#FFFFFF	#000000	##FFFFFF
##3758DE	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DE2

Deuteranopia (green-blind)

#005EDB

Tritanopia (blue-blind)

#007A93

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3758de;
/* rgb */ color: rgb(55, 88, 222);
/* oklch */ color: oklch(52.1% 0.207 267.7);

Tailwind

colors: {
  custom: {
    50: '#8686e9',
    500: '#3758de',
    950: '#000000',
  },
}

SCSS

$custom: #3758de;
$custom-light: #8686e9;
$custom-dark: #000000;

JSON

{
  "hex": "#3758de",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 222
  },
  "hsl": {
    "h": 228.144,
    "s": 71.674,
    "l": 54.314
  },
  "oklch": {
    "l": 0.52072,
    "c": 0.20726,
    "h": 267.7
  },
  "luminance": 0.13066
}

Semantic roles & 50–950 ramp

primary

#3758DE

secondary

#DCCE95

accent

#CB39EE

background

#F9F8FE

surface

#F1EFFD

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3758DE

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →